MitM attack in LibreOffice

1) Improper Certificate Validation

EUVDB-ID: #VU93313

Risk: Medium

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-5261

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to missing certificate validation within the LibreOfficeKit when calling "curl" to fetch remote resources such as images hosted on web servers. A remote attacker can perform MitM attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

LibreOffice: 24.2.0.1 - 24.2.3.2

CPE2.3

• cpe:2.3:a:libreoffice:libreoffice:24.2.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:libreoffice:libreoffice:24.2.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:libreoffice:libreoffice:24.2.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:libreoffice:libreoffice:24.2.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:libreoffice:libreoffice:24.2.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:libreoffice:libreoffice:24.2.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:libreoffice:libreoffice:24.2.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:libreoffice:libreoffice:24.2.3.2:*:*:*:*:*:*:*

External links

https://www.libreoffice.org/about-us/security/advisories/cve-2024-5261

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.